CVE-2017-5547

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-02-06 · updated 2026-06-17
Weakness: CWE-119

Description

drivers/hid/hid-corsair.c in the Linux kernel 4.9.x before 4.9.6 interacts incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more than one virtual page for a DMA scatterlist.

Affected products

Linux kernel: from 4.4 before 4.4.45; from 4.5 before 4.9.6 — fixed in 4.4.45, 4.9.6

How to fix

Upgrade to a fixed version: Linux kernel 4.4.45, 4.9.6. Check the vendor advisory for mitigations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d104af38b570d37aa32a5803b04c354f8ed513d
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6
http://www.openwall.com/lists/oss-security/2017/01/21/3
http://www.securityfocus.com/bid/95709
https://bugzilla.redhat.com/show_bug.cgi?id=1416096
https://github.com/torvalds/linux/commit/6d104af38b570d37aa32a5803b04c354f8ed513d
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d104af38b570d37aa32a5803b04c354f8ed513d
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6
http://www.openwall.com/lists/oss-security/2017/01/21/3
http://www.securityfocus.com/bid/95709
https://bugzilla.redhat.com/show_bug.cgi?id=1416096
https://github.com/torvalds/linux/commit/6d104af38b570d37aa32a5803b04c354f8ed513d

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